3951285420 has 96 divisors (see below), whose sum is σ = 11451396096. Its totient is φ = 1016928000.

The previous prime is 3951285383. The next prime is 3951285421. The reversal of 3951285420 is 245821593.

It is a super-2 number, since 2×3951285420² = 31225312940609152800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3951285421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735745 + ... + 741095.

It is an arithmetic number, because the mean of its divisors is an integer number (119285376).

Almost surely, 2^3951285420 is an apocalyptic number.

3951285420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3951285420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5725698048).

3951285420 is an abundant number, since it is smaller than the sum of its proper divisors (7500110676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3951285420 is a wasteful number, since it uses less digits than its factorization.

3951285420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5791 (or 5789 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 3951285420 is about 62859.2508704964. The cubic root of 3951285420 is about 1580.9305819628.

The spelling of 3951285420 in words is "three billion, nine hundred fifty-one million, two hundred eighty-five thousand, four hundred twenty".